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Table 2 Structure and sizes of pedigrees (Sample 4)

From: Recessive genetic mode of an ADH4 variant in substance dependence in African-Americans: A model of utility of the HWD test

  Total EAs AAs Others
Subjects 1613 766 833 14
   %Male 46.3 51.4 41.2 71.4
   Age (year) 39.4 ± 8.9 37.8 ± 10.2 40.8 ± 7.2 43.7 ± 5.7
Pedigrees 632 311 316 5
   With 1 AD 242 115 126 1
   With 2 AD 166 87 78 1
   With 3 AD 11 5 6 0
   With 4 AD 5 2 3 0
   With ≥ 5 AD 1 0 1 0
   With 1 DD 57 25 32 0
   With 2 DD 460 243 216 1
   With 3 DD 90 35 55 0
   With 4 DD 16 7 9 0
   With ≥ 5 DD 3 0 3 0
  1. EA, AA, AD, DD, same as Table 1. "With n AD", a pedigree having n offspring with AD; as analogy.